We do not recommend using Clorox® Oxi Magic™ stain remover powder on nylon, silk or wool. It works best for laundry and carpets, and is safe on colored fabrics and surfaces. Tough On Stains: Food Dirt/Mud/Grass Coffee/Tea Juice Ink Spaghetti Sauce Red Wine Organic Stains Multi-Purpose Stain Remover: Laundry Carpet Bathtubs Sinks Countertops Toilets Vinyl Floors Shower Curtains Contains no phosphorus.